What is the quantity included in this listing?

This listing includes a quantity of 4 refills.

How can I verify this item?

The item is identifiable by the barcode: 8901023022968.

This is a set containing 4 refills.

Open Products Facts

4 refils

Used

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New / Sealed

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What is the quantity included in this listing?: This listing includes a quantity of 4 refills.
How can I verify this item?: The item is identifiable by the barcode: 8901023022968.
Is this a single refill or a set?: This is a set containing 4 refills.